What are pinholes or skips in a coat of paint indicative of?

Pinholes or skips in a coat of paint indicate incomplete film application. When a layer of paint is not properly applied, it can lead to small gaps or voids in the coating, which are referred to as pinholes or skips. This phenomenon generally occurs when the application techniques do not ensure a continuous and even coverage of the surface. Factors contributing to incomplete application may include the applicator's technique, the speed of application, and inadequate coverage during the painting process.

Inadequate surface preparation could also lead to issues with paint adherence, but it typically manifests in other ways, such as poor adhesion or peeling rather than specifically pinholes. Improper mixing of components can affect the performance and stability of the paint but is more likely to lead to issues like separation or cloudiness rather than pinholes. Excessive film thickness might lead to problems like sagging or running but would not specifically be indicated by pinholes, which are directly linked to how well the paint has been applied.